Modulator



FIG. 1 is a left-side perspective view of a modulator showing my design.

FIG. 2 is an articulated view of the modulator of FIG. 1.

FIG. 3 is an articulated view of the top of the modulator of FIG. 1 and,

FIG. 4 is another articulated view of the top of the modulator of FIG. 1. 

The ornamental design for a modulator, as shown and described. 